O_(3)oxidation combined with semi-dry method for simultaneous desulfurization and denitrification of sintering/pelletizing flue gas  

作　　者：Fagao Liu Maoyu Cai Xiaolong Liu Tingyu Zhu Yang Zou 

机构地区：[1]CAS Key Laboratory of Green Process and Engineering,Institute of Process Engineering,Innovation Academy for Green Manufacture,Chinese Academy of Sciences,Beijing 100190,China [2]Center for Excellence in Regional Atmospheric Environment,Institute of Urban Environment,Chinese Academy of Sciences,Xiamen 361021,China

出　　处：《Journal of Environmental Sciences》2021年第6期253-263,共11页环境科学学报（英文版）

基　　金：supported by the National Key Research and Development Program of China(No.2017YFC0210600);the National Natural Science Foundation of China(No.51978644)。

摘　　要：With the vigorous development of China's iron and steel industry and the introduction of ultra-low emission policies,the emission of pollutants such as SO_(2)and NO x has received unprecedented attention.Considering the increase of the proportion of semi-dry desulfurization technology in the desulfurization process,several semi-dry desulphurization technologies such as flue gas circulating fluidized bed(CFB),dense flow absorber(DFA)and spray drying absorption(SDA)are briefly summarized.Moreover,a method for simultaneous treatment of SO_(2)and NOx in sintering/pelletizing flue gas by O_(3)oxidation combined with semidry method is introduced.Meantime,the effects of key parameters such as O_(3)/NO molar ratio,Ca SO_(3),SO_(2),reaction temperature,Ca/(S+2 N)molar ratio,droplet size and approach to adiabatic saturation temperature(AAST)on denitrification and desulfurization are analyzed.Furthermore,the reaction mechanism of denitrification and desulfurization is further elucidated.Finally,the advantages and development prospects of the new technology are proposed.

关 键 词：O_(3) OXIDATION Semi-dry method Sintering/pelletizing flue gas Desulfurization and denitrification 

分 类 号：X757[环境科学与工程—环境工程]